Lock



Dec. 16,1930. L. 1.. BRESLER LOCK ' 'Fi1ed Feb. 23, 1929 2 Sheets-Sheet 1 ipi'nvilalillllillrlipibl Dec. 16, 1930. L. .L. BRESYLER 1,785,335

LOCK

Filed Feb. 25, 1929 2 Sheets-Sheet 2 6' oaio Z1 H 10 63 4 J9 V 66 I 75' I23 3 A M- L; h l m "all 4310 Z 13 fizz/6%:

41 lfifeelfi Z37 I gum f-2% Patented Dec. 16, 1930 v UNITED STATE vIP E T O FFIC J 7 Louis L. snEsma-or cHIcAG LLmors, nssrsnon T H. r. POLLAIN', or en tcAGo,

' rumors.

[ ocx j Application iil ed February 23 1929. Serial No. 3415911;

This invention has to do with locks, and is particularly concerned with door locks of the type in which a single bolt is made to Y serve both as a latch bolt and as a deadbolt. The principal object of the invention is to provide a novel door lock which is easy to install and operate,cannot be forced, and is inexpensive to manufacture.

Other objects and advantages of the invention will be apparent to those skilled in the art upon a full understanding of the construction'; arrangement and operation of the lock. One embodiment of the inventionis prel5 sented herein for the purpose of exempli fication, but it will of'course be understood that the invention is capable of being embodied in otheristructurally modified forms coming equallywithin the comprehensive scope of the appended claims.

In the accompanying drawings: Fig. 1' is a side elevation-of the lock, as viewed from the inside of the door to which applied; v

Fig; 2 is another side elevation of the lock, as viewed from the outside of the door; 7 Fig. 3 is a plan view of the lock; Fig. 4 is a longitudinal section through the casingof thelock, showing the bolt in its normal projected position;

Fig.5 is a corresponding section, showing the bolt in its retracted position; i Fig. 6 is a somewhat similar section passing between the two laterally separable sections of the bolt, showing the locking dogs retractedwithin the bolt; Fig. 7 is a corresponding view, showing the lockingdogs projected with respect to the l Fig. 8 is a diametric section through both the inside and outside lock-operating mecha- 'nisms, taken on the line 8--8 of Fig.2; a

Fig. 9 is a fragmentary section corresponding to the right-hand portion of Fig. 8; showing a key inserted in the lock cylinder in the outside knob; i i

Fig. 10 is transverse section key-operated clutch; taken on the line l0-10 through the "1 Fig. 11 is a 'longitudinalhorizontal sec: tion'through the bolt. 2 V The: lock shown in the drawings includes a tubular casing 10in which a boltdll is slidably mounted. The 'bolt is normally caused to projectfrom the front end of the casing by the action of coil springs 12, which V springs fit into recesses, 13 formed-in the opposite sides of the bolt and bear against blocks 14 which are secured to the inside wall-j of the casing by screws 15. I

The bolt-may be retracted against the action of the'springs by turning either an inside knob 16 or anoutside knob 17 Theinner end 18 of the knob 16 is journaledin a bore 19 in a bracket 20 which fits about one side of thecasing over an opening 21 therein, while theinner end 22 of the knob 17 is journaled within a bore 23 in a bracket 24 which fits about the other side of the casing over an opening 25 therein. The brackets 20 and 24 are clamped tightly about the casing by screws 26 positioned above and below the casing.; The knobs 16 and 17 are held against outward axial movement in the tubular portions of the brackets by means of rings-27 which fit over the inner ends of the knobs inside of the brackets and are held in position by transfixing pins 28. The inner ends of the knobs telescope overhub portions 29oncam end thereof. When either the knob 16 or knob 17 isturneda portion of a revolution, one of the'cams on-the cam member connected with that knob will bear against the opposed shoulder on the bolt and cause the bolt to shift rearwardly in the, casing against the yielding resistance of the springs from the position shown in Fig. 4-to that shown in The bolt contains a pair of locking dogs 36 and a slide 37 to which the dogs are connected by links 38. The dogs are preferably curved, as shown in Fig.6, and are positioned in correspondingly shaped guideways 39. When the slide 37 is shifted toward the front end of the bolt, the front ends-of the dogs are projected fromthe same, as shown in.

Fig. 7, and, when the slide is shifted rearwardly in the bolt, the dogs are retracted, as shown'inFig. 6. The'bolt 1s preferably-made in two laterallyseparable parts 40 and 41. The part 41 is relatively thick, and is hollowed out to accommodate the dogs 36,-the slide 37 and the links 38, .while the part 40 'is relatively thin, and forms in efiect a cover plate;for the part 41, to which it is secured by screws 42. The rear portions of the parts 40 and 41 are provided with longitudinally elon gated openingsthroug'h which a stem 43 for operating the dogs 36 passes.

j The stem 43 iscoa'xial with the bolt-retracting knobs 16 and 17 but operates independently thereof to project orretract the dogs 36' tions 29 ofthe cam members 30. Throughout the greater portionof its length the stem is flattened at opposite sides tomake it of non circular cross-section, anda cammember 45 having a bore-of corresponding cross-section isnon-rotatably mounted on the stem within the bolt between the cam members 30. When the cam member 45 is rotated by the stem 43 in the direction indicated-by the curved arrow in Fig. 6, a cam ,46 on the cam member movesinto engagement with asho'ulder 47 on the slide 37, depresses the adjacent end 48 of a pivoted arm 49 wherebyto lift the other notched end 50 of such and out of interlocked engagement with a cross pin 51 in the bolt, and shifts the slide 37 forwardly within the bolt, thus projecting the front ends of the locking dogs from the front end of the bolt into the position shown inFig. 7 ,When the cam member 45 reaches the positionshown in F i-g ..7, the cam 46 allows the end 48 of the arm 49 to swing upwardly, whereupon the end 50 of the arm in consequence moves downwardly under the action of a spring 52 into a position wherein notches in the lower-portion of that end of the arm come into interlocked engagement with thepin' 51. and-another 53, thereby locking the slide 37. against rearward movement. During the above described forward movementof the slidegwithin the bolt, a small catch 54 which is pivoted to the bolt at 55; is cause by alug 56 on the slide, to swing fromthe position shown in F ig. 6 to the position shown in Figr7, in

whichlatterposition, a projection 57 on one end of the catch is forced upwardly into an opening 58in the casing, thereby holding ;The stem 43 may be turned either from the "inside-by a thumb piece 60, or from the outside by a key 61operating in a lock cylinder 62. -The thumb piece is arranged concentrically of the inner knob 16and is provided with an inwardly extendingportion 63 which is journaled withinthe inner endlS of the knob 16 and contains a non-circular recess 64 in which the flattened portion of the stem 43 fits in non-rotatable engagement therewith. lVhen the thumb piece60 is turned, it will turn the stem 43, whichin turn will cause the cammember 45 to shift the slide 37 forwardly or rearwardly within the bolt, thereby projecting orretracting the dogs 36, depending upon the direction in which thethumb piece is turned. When the key 61 is inserted in the keyway in the lock cylinder 62 far enough to release the tumblers (not shown) in the cylinder, the innertip of the keywill engage with a floating head 65 which is non-rotatably'associated with thekey-operated por tion of-the cylinder and will force the same toward the stem-carrying head-44 against the yielding resistance of an interposed coil spring 66, resulting in anarc-shaped lug 67 on the inner face of the head 65 being moved into lapped relation with a coacting clutch stud 68 on the outer face'of the head' 44. When the: key is then turned in the cylinder, the lug 67, aftera certain amount of free movement, will engage with the stud 68 and will turn the head 44, thereby rotating the cam member 45 and shifting the slide 37 to either project or retract the dogs 36 with respect to the bolt.

In order to maintain the cam memberl45 with the cam 46 thereon normally in the position shown in ,Fig. 6, a'pair of small wire springs 69 are positionedin the longitudinally elongated openings in the sides of the boltin spring pressed engagement with flattened surfaces 70 on otherwise circular axial- 1y extending hub portions'of the cam member 45. When a positive force isapplied' through either the thumb piece60 or the key 61, to rotate thecam member. 45, the springs 69 will yield and, permit such rotation, but at all other times the springs will tend to. prevent the cam member 45 from inadvertently leaving the neutral position ofthesame' shown in Fig.v 6. Thin-spacing washers 71 may beinserted between the cam member; 452 and the cam members to preventthe rotation'of the cams from being moved into dead center positions wherein the action of the springs 12 would be rendered ineffective.

It might be desirable to have, ina lock of the type under consideration, means for preventing the locking dogs 36 from being retracted by the outside key 61 after such dogs have been projected by the inside thumb piece 60. This may be accomplished by providing an angularly disposed groove 72 in the inwardly extending portion 63 of the thumb. piece and having a stud 73 carried either by a portion of the knob or by a non-rotatable extension of the bracket 20 project into the groove, whereby to cause the thumb piece, when it is turned to project the dogs, to move inwardly at the same time and force the head 44 against the head 65. This will prevent the head 65 from being shifted inwardly by the tip of the key, with the result that the key cannot be inserted in the lock cylinder far enough to release the tumblers therein.

Any or all of the various lock parts above described obviously may be made up in any number of sections desired, in order to facilitate manufacture and assemblage. Theescutcheon plates ordinarily employed with a lock of the type here under consideration, may be positioned against the sides of the door in proper relation to the look by passing the screws used to tie the plates together through aligning notches 74 formed in the upper and lower portions of the brackets 20.

I claim:

1. In a door look, a spring-projected bolt, inside and outside means operable independently of eachother to retract the bolt, a supplemental locking member carried by the bolt, and inside and outside means operable independently of each other to project said member with respect to the bolt.

2. In a door look, a spring-projected bolt, means for retracting the bolt, a supplemental locking member carried by the bolt, outside keywontrolled means for projecting said member with respect to the bolt, andinside means operable independently of said keycontrolled means to similarly project said member. w

3. In a door lock, a spring-projected bolt, inside and outside means operable independently of each other to retract the bolt, a supplemental locking member carried by the bolt, outside key-controlled means for projecting said member with respect to the bolt,

inside means operable independently of said key-controlled means to similarly project said member, and means for preventing use of the key-controlled means to retract the projected member after the same has been projected by the inside means.

i 4. In a door lock, a bolt having a transverse opening therein, a supplemental looking member carried by the bolt, means ex- 7 tending into said opening for moving the 'bolt, and separate independently operable.

means extending .into said opening concentric association -with the first mentioned means .forlmoving said member relative to thebolt.

5. In adoor look, a tubular casing forming a guideway, aboltsupported in, the guideway in closely fitted sliding association therewith, springimeans for normally" projecting one endv of the bolt from the casing, inside and outside 'means operable independently of each other to retract'the bolt into the casing-against the action of said spring means,

a-supplemental locking member carried by the bolt, inside and outside means operable independently of each other to project said member from the projected portion of the bolt, and meansboacti'ng with the guideway andthe bolt to prevent retraction of the latter eas long as saidmember is in a projected position.'. i

V v 6. In a door look, a tubular casing, abolt slidably mounted in the casing,,spring means for normally projecting one endofthe bolt from the'casing, an inside 'kn'ob at one side of the casing rota-table to retract the bolt against the action of saids'pring means,,.an

outside knob on the other side of the casing 1 rotatable to similarly retract the bolt, a supplemental locking member slidably mounted in the bolt, an inside finger piece movable to project said member from the projected pormeans for preventingretraction of said member bythe key after said member has been projected by the finger piece.

7. In a door look, a tubular casing, a bolt slidably mounted in the casing, spring means for normally projecting one end of the bolt from the casing, an inside knob at one side of the casing rotatable to retract the bolt against the action of said spring means, an outside, knob at the other side of the casing rotatable to similarly retract the bolt, a pair of dogs slidablymounted in the bolt, an inside finger piece movable to project the dogs from the projected portion of the bolt in diiferent directions, an outside key rotatable to similarly project the dogs, and means for preventing retraction of the bolt as long as the dogs are in projected positions.

8. In a door look, a tubular casing, a bolt slidably mounted in the casing, spring means for normally projecting. oneend of the bolt from the casing, an inside knob at one sidewof V r I j r the casing rotatable to retract the: bolt 7 against the action of said spring means, an outside knob at the other; side of the casing rotatable to similarly retract the bolt, a pair of hooked dogs slidably: mounted in the bolt, an inside finger piece rotatable to project the dogs from the projected portion of the bolt in diverging directions, an outside key rotat able-to similarly project the dogs, and means for preventing retraction of the bolt as long as the dogs are in projected positions.

9. In a door lock, a casing having an elongated tubular portion, a bolt supported in the tubular portion of the casing in closely fitted sliding association therewith, a supplemental locking member carried by the bolt for projection fromthe end thereof, means for projecting the end of the bolt from the casing, and independently operable means telescopically associated with said last mentioned means for projecting the supplemental locln'ng member from the end of the bolt'after the latter has been projected from the cas- .ing, one of said two last mentioned means being j ournaled' in the other and the latter being journaled in the casing on an axis pass ing transversely ithroughi the bolt. 9

10. In a door look, a casing having an elongated tubular portion, aibolt supportedin the tubular portion of the casing in closely fitted sliding association therewith, a'supplemental locking member. carried-by the bolt for projection from the end thereof, means for projecting the end of the bolt from the casing, and independently operable means for projecting the supplemental locking member from the end of the bolt after the latterhas been-projected from the casing, said two last mentioned means extending perpendicularly of the bolt' into an aperture. formed in the latter intermediate the ends thereof.

In' testimony whereof I have hereunto subscribed my name.

Louis L; BREsLnR. 

